Grizzly Falls in Kings Canyon National Park is most impressive in the spring, when the thunderous force is so strong you can feel the reverberations in your chest. Head off Kings Canyon Scenic Byway and hike the short, easy trail up to the 75-foot waterfall.

Grizzly Falls in Kings Canyon National Park is most impressive in the spring, when the thunderous force is so strong you can feel the reverberations in your chest. Head off Kings Canyon Scenic Byway and hike

Backpackers trudge along the John Muir Trail, one of California's premiere hiking trails, in Kings Canyon National Park.

Backpackers trudge along the John Muir Trail, one of California's premiere hiking trails, in Kings Canyon National Park.

Photo: Photo Graphic Com/Corbis Via Getty Images

Backpackers trudge along the John Muir Trail, one of...photo-16156812.185104 - |ucfirst

It takes a lot of tree huggers to give the famous General Grant Tree a proper hug in Kings Canyon National Park.

It takes a lot of tree huggers to give the famous General Grant Tree a proper hug in Kings Canyon National Park.

Photo: Joe Sohm/Visions Of America/UIG Via Getty Images

It takes a lot of tree huggers to give the famous General Grant...photo-16156814.185104 - |ucfirst

A backpacker ices his feet in frigid waters high in the mountains of Kings Canyon National Park.

A backpacker ices his feet in frigid waters high in the mountains of Kings Canyon National Park.

Photo: Photo Graphic Com/Corbis Via Getty Images

A backpacker ices his feet in frigid waters high in the mountains...photo-16156815.185104 - |ucfirst

Professional trail runner Francois D'haene speeds along on the John Muir Trail in the Sierra Nevada mountain range. The French winemaker took fewer than three days to cover 221 miles up Mount Whitney and across the John Muir Trail through Sequoia, Kings Canyon and Yosemite national parks.

Professional trail runner Francois D'haene speeds along on the John Muir Trail in the Sierra Nevada mountain range. The French winemaker took fewer than three days to cover 221 miles up Mount Whitney and across